20656419

素因数分解:

$3^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{9739}}^1$

素因数の和:9850

約数の個数: 16

約数和(自身を含む): 31791360

約数和(自身を除く): 11134941

約数列:

[1, 3, 7, 21, 101, 303, 707, 2121, 9739, 29217, 68173, 204519, 983639, 2950917, 6885473, 20656419]

約数ペア:

[(1, 20656419), (3, 6885473), (7, 2950917), (21, 983639), (101, 204519), (303, 68173), (707, 29217), (2121, 9739)]